CN115303088A - Control method and device for starting and stopping fuel cell engine, processor and vehicle - Google Patents
Control method and device for starting and stopping fuel cell engine, processor and vehicle Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title claims abstract description 48
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 51
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- 238000007726 management method Methods 0.000 description 8
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/75—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using propulsion power supplied by both fuel cells and batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
- B60L58/31—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for starting of fuel cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04955—Shut-off or shut-down of fuel cells
Abstract
The invention discloses a control method and device for starting and stopping a fuel cell engine, a processor and a vehicle. Wherein, the method comprises the following steps: acquiring working condition information of a fuel cell engine; acquiring hydrogen content information in a hydrogen cylinder under the condition that the fuel cell engine is determined to be in a fault state, wherein the hydrogen cylinder is used for providing hydrogen for the fuel cell engine; acquiring the state information of the vehicle under the condition that the hydrogen content information meets a first preset condition; and under the condition that the state information is determined to meet the second preset condition, generating a control instruction, wherein the control instruction is used for controlling the starting of the fuel cell engine. The invention determines the starting and stopping time of the fuel cell engine according to the characteristics of the small-capacity battery, the power requirement of a driver, the state of the fuel cell engine, the residual quantity of hydrogen of a hydrogen cylinder and other factors, and solves the technical problems of low vehicle power and low economical efficiency caused by the matching of a large-capacity power battery and a small-power fuel cell engine.
Description
Technical Field
The invention relates to the technical field of vehicle batteries, in particular to a method and a device for controlling start and stop of a fuel cell engine, a processor and a vehicle.
Background
Most of the power combinations of fuel cell vehicles on the market are large-capacity power batteries matched with low-power fuel cell engines.
The prior art discloses a fuel cell hybrid electric vehicle energy management method based on driving style, which comprises the steps of establishing a whole vehicle model and an energy source model through a power system of a whole vehicle, designing a driving style recognition algorithm through driving data in vehicle driving, obtaining equivalent factors according to off-line simulation under various working conditions, and designing a self-adaptive equivalent consumption minimum strategy based on the driving style by combining an equivalent consumption strategy. The energy management method of the fuel cell hybrid electric vehicle considers the power provided by different energy sources and also considers the change of the SOC of the lithium battery and the super capacitor, ensures that the SOC of the lithium battery and the super capacitor work in a proper range, and reduces the consumption of fuel to the maximum extent. This patent is directed to energy management for driving style and does not mention energy management techniques for small capacity batteries.
In another prior art, an FCHEV energy management method based on intelligent networking information is disclosed, which includes establishing a fuel cell hybrid electric vehicle control model, performing speed planning by using vehicle networking information, and then designing a hierarchical energy management architecture of a self-adaptive equivalent fuel consumption minimization method and a model predictive control method to optimize the required power of a vehicle, so as to realize optimal distribution. The invention reasonably distributes the load demand power to the fuel cell, the lithium battery and the super capacitor by using the traffic signal lamp and the car networking information, and simultaneously achieves the purposes of avoiding frequent parking before a red light, prolonging the service life of the lithium battery and reducing the hydrogen consumption. The patent optimizes the working efficiency of the system according to the road condition, and does not provide an energy management method applying a small-capacity power battery.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling start and stop of a fuel cell engine, a processor and a vehicle, which at least solve the problem of high battery cost caused by matching a high-capacity power battery with a low-power fuel cell engine.
According to an aspect of an embodiment of the present invention, there is provided a control method of start-stop of a fuel cell engine, including: acquiring the working condition information of the fuel cell engine, wherein the working condition information comprises at least one of the following: the fuel cell engine is in a fault state and a non-fault state; acquiring hydrogen content information in a hydrogen cylinder under the condition that the fuel cell engine is determined to be in a fault state, wherein the hydrogen cylinder is used for providing hydrogen for the fuel cell engine; under the condition that the hydrogen content information is determined to meet a first preset condition, state information of the vehicle is acquired, wherein the state information indication comprises at least one of the following: the method comprises the following steps that an SOC starting threshold value of a power battery of a vehicle, required power of a driver, discharging capacity of the power battery within a preset time, rated power of a fuel cell engine and self-required information of the fuel cell engine are obtained; and generating a control instruction under the condition that the state information meets the second preset condition, wherein the control instruction is used for controlling the starting of the fuel cell engine.
Optionally, before acquiring the state information of the vehicle when it is determined that the hydrogen content information satisfies the first preset condition, the method includes: acquiring connection information of the power battery, wherein the connection information comprises at least one of the following: the method comprises the following steps that (1) attraction state information of a main positive relay and a main negative relay of the power battery and fault information of a high-voltage loop of the power battery are obtained; and acquiring the state information of the vehicle under the condition that the connection information meets the third preset condition.
Optionally, when it is determined that the connection information satisfies the third preset condition, acquiring the state information of the vehicle includes: and acquiring the state information of the vehicle under the condition that the main positive relay and the main negative relay of the power battery are determined to be attracted and the high-voltage circuit is determined to have no high-voltage interlocking fault based on the fault information.
Optionally, acquiring the state information of the vehicle, and generating a control instruction when the state information is determined to satisfy a second preset condition, wherein the control instruction comprises: acquiring the required power of a driver, and judging whether the required power is greater than a preset value; and under the condition that the required power is determined to be larger than a preset value, generating a control instruction, wherein the preset value is the difference between the discharge capacity of the power battery in a preset time period and the rated power of the engine of the fuel battery.
Optionally, the obtaining state information of the vehicle, and generating a control instruction when determining that the state information satisfies a second preset condition includes: acquiring the discharge capacity of the power battery within a preset time; and generating a control command under the condition that the discharge capacity of the power battery within 10s is determined to be smaller than the rated power of the fuel cell engine.
Optionally, acquiring state information of the vehicle, and generating a control instruction when the state information is determined to satisfy a second preset condition, where the generating includes: acquiring self-demand information of a fuel cell engine, and judging whether the fuel cell engine needs to be started or not based on the self-demand information; if so, a control instruction is generated.
Optionally, acquiring state information of the vehicle, and generating a control instruction when the state information is determined to satisfy a second preset condition, where the generating includes: acquiring an SOC (system on chip) starting threshold value of the power battery; and generating a control instruction under the condition that the SOC starting threshold value of the power battery is determined to be equal to the sum of the power consumption of the primary fuel cell engine, the electric quantity required by purging the fuel cell engine and the electric quantity required by accelerating for one hundred kilometers.
According to another aspect of the embodiments of the present invention, there is also provided a control apparatus for start-stop of a fuel cell engine, including: the fuel cell system comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring the working condition information of the fuel cell engine, and the working condition information comprises at least one of the following: the fuel cell engine is in a fault state and a non-fault state; a second acquisition unit for acquiring information on the hydrogen content in a hydrogen cylinder for supplying hydrogen to the fuel cell engine, in the case where it is determined that the fuel cell engine is in a failure state; a third obtaining unit, configured to obtain status information of the vehicle if it is determined that the hydrogen content information satisfies a first preset condition, where the status information indicates that at least one of the following is included: the method comprises the steps that an SOC starting threshold value of a power battery of a vehicle, required power of a driver, discharging capacity of the power battery within a preset time period, rated power of a fuel cell engine and self-required information of the fuel cell engine are obtained; and the generating unit is used for generating a control instruction under the condition that the state information is determined to meet the second preset condition, and the control instruction is used for controlling the starting of the fuel cell engine.
According to another aspect of the embodiments of the present invention, there is also provided a processor, wherein the program is executed to perform the above-described control method of start-stop of a fuel cell engine.
According to another aspect of the embodiment of the invention, a vehicle is also provided, wherein the vehicle is controlled by the control method for starting and stopping the fuel cell engine.
In the embodiment of the invention, the mode of acquiring the preset information is adopted, and the preset condition met by the hydrogen content information, the power requirement of the driver, the state of the fuel cell engine and the characteristic of the small-capacity battery are acquired, so that the technical effect of determining the starting and stopping time of the fuel cell engine according to the characteristics of the small-capacity battery, the power requirement of the driver, the state of the fuel cell engine, the residual hydrogen of a hydrogen cylinder and other factors is realized, and the technical problem of low vehicle power and economy caused by the matching of a large-capacity power battery and a small-power fuel cell engine is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention and do not constitute a limitation of the invention. In the drawings:
FIG. 1 is a block diagram of the hardware architecture of a vehicle apparatus for an alternative fuel cell engine start-stop control method according to an embodiment of the present invention;
FIG. 2 is a flow chart of an alternative fuel cell engine start-stop control method according to an embodiment of the present invention;
FIG. 3 is a block diagram of an alternative fuel cell engine start-stop control arrangement according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an alternative threshold structure according to an embodiment of the present invention;
FIG. 5 is a flow chart of an alternative fuel cell engine start-stop control method according to an embodiment of the present invention;
fig. 6 is a schematic diagram of an alternative fuel cell system configuration according to an embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a method embodiment for controlling start-stop of a fuel cell engine, wherein the steps illustrated in the flowchart of the figure may be carried out in a computer system, such as a set of computer-executable instructions, and wherein, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be carried out in an order different than presented herein.
The method embodiments may be implemented in an electronic device or similar computing device that includes a memory and a processor in a vehicle. Taking the example of an electronic device operating on a vehicle, as shown in fig. 1, the electronic device of the vehicle may include one or more processors 102 (the processors may include, but are not limited to, central Processing Units (CPUs), graphics Processing Units (GPUs), digital Signal Processing (DSP) chips, microprocessors (MCUs), programmable logic devices (FPGAs), neural Network Processors (NPUs), tensor Processors (TPUs), artificial Intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the electronic device of the automobile may further include a transmission device 106 for communication function, an input-output device 108, and a display 110. It will be understood by those skilled in the art that the structure shown in fig. 1 is merely an illustration and is not intended to limit the structure of the electronic device of the vehicle. For example, the electronic device of the vehicle may also include more or fewer components than described above, or have a different configuration than described above.
The memory 104 can be used for storing computer programs, for example, software programs and modules of application software, such as a computer program corresponding to the vehicle energy supplementing method in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the above vehicle energy supplementing method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the mobile terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device may be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.
The display 110 may be, for example, a touch screen type Liquid Crystal Display (LCD) and a touch display (also referred to as a "touch screen" or "touch display screen"). The liquid crystal display may enable a user to interact with a user interface of the mobile terminal. In some embodiments, the mobile terminal has a Graphical User Interface (GUI) with which a user can interact by touching finger contacts and/or gestures on a touch-sensitive surface, where the human-machine interaction function optionally includes the following interactions: executable instructions for creating web pages, drawing, word processing, making electronic documents, games, video conferencing, instant messaging, emailing, call interfacing, playing digital video, playing digital music, and/or web browsing, etc., for performing the above-described human-computer interaction functions, are configured/stored in one or more processor-executable computer program products or readable storage media.
Fig. 2 is a control method of start-stop of a fuel cell engine according to an embodiment of the present invention, which includes the steps of, as shown in fig. 2:
step S102, obtaining the working condition information of the fuel cell engine, wherein the working condition information comprises at least one of the following: the fuel cell engine is in a faulted state and a non-faulted state.
And step S104, acquiring hydrogen content information in a hydrogen cylinder under the condition that the fuel cell engine is determined to be in a fault state, wherein the hydrogen cylinder is used for providing hydrogen for the fuel cell engine.
Step S106, acquiring the state information of the vehicle under the condition that the hydrogen content information meets a first preset condition, wherein the state information indication comprises at least one of the following: the method comprises the steps of starting a vehicle by using the SOC of a power battery of the vehicle, the required power of a driver, the discharging capacity of the power battery within a preset time, the rated power of a fuel cell engine and the self-demand information of the fuel cell engine.
And step S108, generating a control instruction under the condition that the state information meets the second preset condition, wherein the control instruction is used for controlling the starting of the fuel cell engine.
Through the steps, the technical effect of determining the starting and stopping time of the fuel cell engine according to the characteristics of the small-capacity battery, the power demand of the driver, the state of the fuel cell engine, the residual hydrogen of a hydrogen cylinder and other factors can be realized by acquiring the preset information through the preset condition met by the hydrogen content information, and acquiring the power demand of the driver and the information of the characteristics of the fuel cell engine and the small-capacity battery, so that the technical problem of low vehicle dynamic economy caused by the matching of the large-capacity power battery and the small-power fuel cell engine is solved.
Specifically, the method for acquiring the state information of the vehicle before determining that the hydrogen content information satisfies the first preset condition includes: acquiring connection information of the power battery, wherein the connection information comprises at least one of the following: the method comprises the following steps of main positive relay and main negative relay pull-in state information of the power battery and fault information of a high-voltage loop of the power battery. And acquiring the state information of the vehicle under the condition that the connection information meets the third preset condition. The set value can judge whether the power battery has connection failure or not, and the normal starting of the fuel battery engine is ensured.
Optionally, when it is determined that the connection information satisfies the third preset condition, acquiring the state information of the vehicle includes: and acquiring the state information of the vehicle under the condition that the main positive relay and the main negative relay of the power battery are determined to be attracted and the high-voltage circuit is determined to have no high-voltage interlocking fault based on the fault information. The arrangement can ensure that the battery does not have a fault and can provide electric energy for the engine within a preset time.
Optionally, the obtaining state information of the vehicle, and generating a control instruction when determining that the state information satisfies a second preset condition includes: and acquiring the required power of the driver, and judging whether the required power is greater than a preset value. And generating a control instruction under the condition that the required power is determined to be greater than a preset value, wherein the preset value is the difference between the discharge capacity of the power battery in a preset time period and the rated power of the fuel cell engine. This arrangement makes it possible to determine whether the driver's required power is greater than a preset value, thereby determining whether to start the engine. The battery can be monitored to provide enough electric energy for the engine within a preset time, so that the engine can be started normally.
Optionally, acquiring state information of the vehicle, and generating a control instruction when the state information is determined to satisfy a second preset condition, where the generating includes: and acquiring the discharge capacity of the power battery within a preset time. And generating a control command under the condition that the discharge capacity of the power battery within 10s is determined to be less than the rated power of the fuel battery engine. This arrangement satisfies that the vehicle has sufficient driving power that can be maintained for a long time. The battery can be monitored to provide enough electric energy for the engine within a preset time, so that the engine can be started normally.
Optionally, the obtaining state information of the vehicle, and generating a control instruction when determining that the state information satisfies a second preset condition includes: acquiring self-demand information of the fuel cell engine, and judging whether the fuel cell engine needs to be started or not based on the self-demand information. If so, a control instruction is generated. This arrangement ensures the functional safety of the fuel cell engine.
Acquiring the state information of the vehicle, and generating a control instruction under the condition that the state information meets a second preset condition, wherein the control instruction comprises the following steps: acquiring an SOC startup threshold value of the power battery; and generating a control instruction under the condition that the SOC starting threshold value of the power battery is determined to be equal to the sum of the power consumption of the primary fuel cell engine, the electric quantity required by purging the fuel cell engine and the electric quantity required by accelerating for one hundred kilometers. The arrangement ensures the electric quantity balance of the power battery.
As shown in fig. 4, the SOC life upper and lower limit thresholds: and determining the SOC life upper limit and the SOC life lower limit of the power battery according to the characteristics of the power battery. SOC life upper limit meaning: when the SOC exceeds the threshold, the life cycle of the battery is adversely affected, and the SOC is controlled to be below the threshold; SOC life lower limit meaning: when the SOC is lower than the threshold, the life cycle of the battery is adversely affected, and the SOC should be controlled to be above the threshold.
Charging performance threshold: charging performance threshold = SOC upper limit of life- Δ 1 ，Δ 1 And initializing a maximum deviation range of the corrected SOC for the power battery BMS. Threshold meaning: after the threshold is reached, any mode of charging the power battery is forbidden.
Fuel cell engine shutdown threshold = charge performance threshold-delta 2 ，Δ 2 And the SOC value is recovered for the vehicle energy of 140km/h-0 km/h. The threshold significance is as follows: after this threshold is reached, the fuel cell engine must be shut down.
A power-assisted threshold: power-assisted threshold = SOC lower life limit + Delta 1 +Δ 3 +Δ 4 ，Δ 3 The self-discharge capacity, delta, of the power battery for 3 months 4 Power consumption to start the primary fuel cell engine. Threshold meaning: below which power battery assist is disabled.
Fuel cell engine start-up threshold: starting threshold = power threshold + delta of fuel cell engine 4 +Δ 5 +Δ 6 ，Δ 5 Amount of power required for fuel cell engine purge, Δ 6 The amount of power required for a one hundred kilometer acceleration. Threshold meaning: after the threshold is reached, the fuel cell engine needs to be started.
SOC median value: SOC median value is greater than or equal to power-assisted threshold +3 delta 6 The threshold meaning: the eigenvalues, without practical significance, represent the level at which SOC maintenance is desired.
In the above example, the influence of the SOC lifetime, the SOC correction deviation, and the self-discharge on the energy management is sufficiently considered. And the method for calculating the stop threshold and the charging performance threshold can fully recover the vehicle sliding braking energy. The power performance is fully considered by setting the power-assisted threshold and the starting threshold.
An embodiment of the present application also provides an alternative fuel cell engine start-stop control apparatus, as shown in fig. 3, including: a first acquiring unit 40, a second acquiring unit 42, a third acquiring unit 44 and a generating unit 46. The first acquisition unit is used for acquiring the working condition information of the fuel cell engine, wherein the working condition information comprises at least one of the following: the fuel cell engine is in a faulted state and a non-faulted state. The second acquisition unit is used for acquiring hydrogen content information in a hydrogen cylinder under the condition that the fuel cell engine is determined to be in a fault state, wherein the hydrogen cylinder is used for providing hydrogen for the fuel cell engine. The third acquiring unit is used for acquiring the state information of the vehicle under the condition that the hydrogen content information is determined to meet the first preset condition, wherein the state information indication comprises at least one of the following: the method comprises the steps of starting the vehicle by SOC of a power battery of the vehicle, power required by a driver, discharging capacity within a preset time period of the power battery, rated power of a fuel cell engine and self-demand information of the fuel cell engine. The generating unit is used for generating a control instruction under the condition that the state information is determined to meet the second preset condition, and the control instruction is used for controlling the starting of the fuel cell engine.
Embodiments of the present application also provide a processor, wherein a program is run to perform the above-described fuel cell engine start-stop control method.
The embodiment of the application also provides a vehicle, and the vehicle is controlled by adopting the control method for starting and stopping the fuel cell engine as shown in FIG. 6. The small-capacity power battery can be adopted in the arrangement, the battery cost is reduced, the vehicle weight is reduced, the internal arrangement space of the vehicle is saved, and the cost of charging related equipment is removed.
In another embodiment of the present application, as shown in fig. 5, the fuel cell engine startup requirements are determined:
c01: the fuel cell engine state is a non-failure state.
C02: the power battery relay is connected, and the vehicle high-pressure loop is communicated.
C03: the hydrogen content in the hydrogen bottle is greater than a threshold at which the fuel cell engine can be started. The hydrogen content detects the pressure in the hydrogen bottle according to the hydrogen bottle controller, calculates the current hydrogen residual percentage according to the current pressure, sends the percentage signal to the HCU through a CAN signal, and when the signal is greater than a set threshold value, the fuel cell engine meets the starting condition.
When the three conditions of C01, C02 and C03 are simultaneously satisfied, the starting requirement of the fuel cell engine is met.
Starting conditions of the fuel cell engine:
c04: in order to ensure the electric quantity balance of the power battery, when the SOC of the power battery reaches a startup threshold, the engine of the fuel battery starts.
C05: driver demand power > (power cell 10s discharge capability-fuel cell engine rated power).
C06: the discharge capacity of the power battery is less than 50kw.
C07: fuel cell engines need to be started for their own reasons.
And the four conditions of C04, C05, C06 and C07 meet the condition that one of the conditions can trigger the starting of the engine.
The start-stop relationship is shown in table 1:
in the above embodiments of the present invention, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described in detail in a certain embodiment.
In the embodiments provided in the present application, it should be understood that the disclosed technical content can be implemented in other manners. The above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or may not be executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and various media capable of storing program codes.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A method of controlling start and stop of a fuel cell engine, comprising:
acquiring operating condition information of the fuel cell engine, wherein the operating condition information comprises at least one of the following conditions: the fuel cell engine is in a fault state and a non-fault state;
acquiring hydrogen content information in a hydrogen cylinder under the condition that the fuel cell engine is determined to be in the fault state, wherein the hydrogen cylinder is used for providing hydrogen for the fuel cell engine;
under the condition that the hydrogen content information is determined to meet a first preset condition, state information of the vehicle is obtained, wherein the state information indication comprises at least one of the following: the method comprises the following steps that an SOC starting threshold value of a power battery of a vehicle, the required power of a driver, the discharging capacity of the power battery within a preset time, the rated power of a fuel cell engine and the self-required information of the fuel cell engine are obtained;
and generating a control instruction under the condition that the state information meets a second preset condition, wherein the control instruction is used for controlling the starting of the fuel cell engine.
2. The method according to claim 1, wherein before acquiring the state information of the vehicle in the case where it is determined that the hydrogen content information satisfies the first preset condition, the method includes:
acquiring connection information of the power battery, wherein the connection information comprises at least one of the following: the power battery comprises main positive relay and main negative relay suction state information of the power battery and fault information of a high-voltage loop of the power battery;
and acquiring the state information of the vehicle under the condition that the connection information meets a third preset condition.
3. The method according to claim 2, wherein the step of obtaining the state information of the vehicle when determining that the connection information satisfies a third preset condition comprises:
and acquiring the state information of the vehicle under the condition that the main positive relay and the main negative relay of the power battery are determined to be closed and the high-voltage loop is determined to have no high-voltage interlocking fault based on the fault information.
4. The method according to claim 1, wherein the step of acquiring the state information of the vehicle, and generating a control command when the state information is determined to meet a second preset condition comprises the steps of:
acquiring the required power of a driver, and judging whether the required power is greater than a preset value;
and generating the control instruction under the condition that the required power is determined to be greater than the preset value, wherein the preset value is the difference between the discharge capacity of the power battery in a preset time period and the rated power of the fuel cell engine.
5. The method according to claim 1, wherein the step of acquiring the state information of the vehicle, and generating a control command when the state information is determined to meet a second preset condition comprises the steps of:
acquiring the discharge capacity of the power battery within a preset time;
and generating the control command under the condition that the discharge capacity of the power battery within 10s is determined to be smaller than the rated power of the fuel cell engine.
6. The method according to claim 1, wherein obtaining the state information of the vehicle, and generating the control command when determining that the state information meets a second preset condition comprises:
acquiring self-demand information of the fuel cell engine, and judging whether the fuel cell engine needs to be started or not based on the self-demand information;
if so, generating the control instruction.
7. The method according to claim 1, wherein the step of acquiring the state information of the vehicle, and generating a control command when the state information is determined to meet a second preset condition comprises the steps of:
acquiring an SOC (state of charge) starting threshold value of the power battery;
and under the condition that the SOC starting threshold value of the power battery is equal to the sum of the power consumption of a primary fuel cell engine, the power required by purging the fuel cell engine and the power required by accelerating one hundred kilometers, generating the control command.
8. A control apparatus for start-stop of a fuel cell engine, characterized by comprising:
the fuel cell system comprises a first acquisition unit, a second acquisition unit and a control unit, wherein the first acquisition unit is used for acquiring the working condition information of the fuel cell engine, and the working condition information comprises at least one of the following: the fuel cell engine is in a fault state and a non-fault state;
a second acquisition unit configured to acquire information on a hydrogen content in a hydrogen cylinder for supplying hydrogen to the fuel cell engine, in a case where it is determined that the fuel cell engine is in the failure state;
a third obtaining unit, configured to obtain status information of the vehicle if it is determined that the hydrogen content information satisfies a first preset condition, where the status information indicates that at least one of the following is included: the method comprises the following steps that an SOC starting threshold value of a power battery of a vehicle, required power of a driver, discharging capacity of the power battery within a preset time period, rated power of a fuel cell engine and self-required information of the fuel cell engine are obtained;
and the generating unit is used for generating a control instruction under the condition that the state information is determined to meet a second preset condition, and the control instruction is used for controlling the starting of the fuel cell engine.
9. A processor for executing a program, wherein the program is executed to execute a control method of start-stop of a fuel cell engine according to any one of claims 1 to 7.
10. A vehicle characterized by being controlled by the control method of start-stop of the fuel cell engine according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210947589.0A CN115303088B (en) | 2022-08-09 | Control method and device for starting and stopping fuel cell engine, processor and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210947589.0A CN115303088B (en) | 2022-08-09 | Control method and device for starting and stopping fuel cell engine, processor and vehicle |
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| CN115303088A true CN115303088A (en) | 2022-11-08 |
| CN115303088B CN115303088B (en) | 2024-05-17 |
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